Peer-reviewed journal publications

  • Armero, F., Romero, I. (2001). On the formulation of high-frequency dissipative time-stepping algorithms for nonlinear dynamics. Part I: low order methods for two model problems and nonlinear elastodynamics. Computer Methods in Applied Mechanics and Engineering, 190, 2603–2649.
  • Armero, F., Romero, I. (2001). On the formulation of high-frequency dissipative time-stepping algorithms for nonlinear dynamics. Part II: second order methods. Computer Methods in Applied Mechanics and Engineering, 190, 6783–6824.
  • Romero, I., Armero, F. (2002). An objective finite element approximation of the kinematics of geometrically exact rods and its use in the formulation of an energy-momentum conserving scheme in dynamics. International Journal for Numerical Methods in Engineering, 54(12), 1683–1716.
  • Romero, I., Armero, F. (2002). Numerical integration of the stiff dynamics of geometrically exact shells: an energy-dissipative momentum-conserving scheme. International Journal for Numerical Methods in Engineering, 54(7), 1043–1086.
  • Romero, I. (2002). On the stability and convergence of fully discrete solutions in linear elastodynamics. Computer Methods in Applied Mechanics and Engineering, 191, 3857–3882.
  • Armero, F., Romero, I. (2003). Energy-dissipative momentum-conserving time-stepping algorithms for the dynamics of nonlinear cosserat rods. Computational Mechanics, 31, 3–26.
  • Romero, I. (2004). The interpolation of rotations and its application to finite element models of geometrically exact rods. Computational Mechanics, 34(2), 121–133.
  • Romero, I. (2004). Stability analysis of linear multistep methods for classical elastodynamics. Computer Methods in Applied Mechanics and Engineering, 193, 2169–2189.
  • Lacoma, L. M., Romero, I. (2006). Estimación de error en dinámica de sólidos deformables. Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, 22(1), 45–62.
  • Romero, I., Lacoma, L. M. (2006). Analysis of error estimators for the semidiscrete equations of linear solid and structural mechanics. Computer Methods in Applied Mechanics and Engineering, 195, 2674–2696.
  • Romero, I., Lacoma, L. M. (2006). A methodology for the formulation of error estimators for time integration in solid and structural dynamics. International Journal for Numerical Methods in Engineering, 66(4), 635–660.
  • Bischoff, M., Romero, I. (2007). An extended method of incompatible modes. International Journal for Numerical Methods in Engineering, 69(9), 1851–1868.
  • Lacoma, L. M., Romero, I. (2007). Error estimation for the HHT method in nonlinear solid dynamics. Computers & Structures, 85, 158–169. http://www.sciencedirect.com/science/article/pii/S0045794906003099.
  • Romero, I., Bischoff, M. (2007). Incompatible bubbles: a non-conforming finite element formulation for linear elasticity. Computer Methods in Applied Mechanics and Engineering, 196, 1662–1672.
  • Segurado, J., Llorca, J., Romero, I. (2007). Computational issues on the simulation of two-dimensional discrete dislocation dynamics. Modelling and Simulation in Materials Science and Engineering, 15, 361–375.
  • Romero, I. (2008). Formulation and performance of variational integrators for rotating bodies. Computational Mechanics, 42, 825–836.
  • Romero, I. (2008). A comparison of finite elements for nonlinear beams: the absolute nodal coordinate and geometrically exact formulations. Multibody System Dynamics, 20(1), 51–68. http://dx.doi.org/10.1007/s11044-008-9105-7.
  • Romero, I., Segurado, J., Llorca, J. (2008). Dislocation dynamics in non-convex domains using finite elements with embedded discontinuities. Modelling and Simulation in Materials Science and Engineering, 16.
  • Romero, I., Arribas, J. J. (2009). A taxonomy of polar decompositions for singular second order tensors in R$^3$. Archives of Mechanics, 61(5), 383–390.
  • Romero, I. (2009). Thermodynamically consistent time stepping algorithms for nonlinear thermomechanical systems. International Journal for Numerical Methods in Engineering, 79(6), 706–732. http://dx.doi.org/10.1002/nme.2588.
  • Romero, I., Arribas, J. J. (2009). A simple method to impose rotations and concentrated moments on ANC beams. Multibody System Dynamics, 21, 307–323.
  • Romero, I. (2010). Algorithms for coupled problems that preserve symmetries and the laws of thermodynamics. Part I: monolithic integrators and their application to finite strain thermoelasticity. Computer Methods in Applied Mechanics and Engineering, 199(25-28), 1841–1858. http://dx.doi.org/10.1016/j.cma.2010.02.014.
  • Romero, I. (2010). Algorithms for coupled problems that preserve symmetries and the laws of thermodynamics. Part II: fractional step methods. Computer Methods in Applied Mechanics and Engineering, 199, 2235–2248.
  • Planas, J., Romero, I., Sancho, J. M. (2012). B free. Computer Methods in Applied Mechanics and Engineering, 217-220, 226–235.
  • Romero, I. (2012). An analysis of the stress formula for energy-momentum methods in nonlinear elastodynamics. Computational Mechanics, 50(5), 603–610. http://dx.doi.org/10.1007/s00466-012-0693-y.
  • García Orden, J. C., Romero, I. (2012). Energy-Entropy-Momentum integration of discrete thermo-visco-elastic dynamics. European Journal of Mechanics - A/Solids, 32, 76–87.
  • Ariza, M. P., Romero, I., Ponga, M., Ortiz, M. (2012). HotQC simulation of nanovoid growth under tension in copper. International Journal of Fracture, 174, 75–85.
  • Ponga, M., Romero, I., Ortiz, M., Ariza, M. P. (2012). Finite temperature nanovoids evolution in FCC metals using quasicontinuum method. Key Engineering Materials, 488–489, 387–390. http://www.scientific.net/KEM.488-489.387.
  • Romero, I. (2013). A Characterization of Conserved Quantities in Non-Equilibrium Thermodynamics. Entropy, 15(12), 5580–5596. http://www.mdpi.com/1099-4300/15/12/5580.
  • Romero, I., Urrecha, M., Cyron, C. J. (2014). A torsion-free nonlinear beam model. International Journal of Non-Linear Mechanics, 58, 1–10. http://dx.doi.org/10.1016/j.ijnonlinmec.2013.08.008.
  • González-Ferreiro, B., Gómez, H., Romero, I. (2014). A thermodynamically consistent numerical method for a phase field model of solidification. Communications in Nonlinear Science and Numerical Simulation, 19(20), 2309–2323. http://dx.doi.org/10.1016/j.cnsns.2013.11.016.
  • Conde Martín, S., García Orden, J. C., Romero, I. (2014). Energy-consistent time integration for nonlinear viscoelasticity. Computational Mechanics, 54(2), 473–488. http://dx.doi.org/10.1007/s00466-014-1000-x.
  • Prieto de Pedro, M., Romero, I., Martín-Bragado, I. (2014). Multiscale modeling of defect formation during solid phase epitaxy regrowth of silicon. Acta Materialia, 82, 115–122. http://dx.doi.org/DOI: 10.1016/j.actamat.2014.07.067.
  • Sadaba, S., Romero, I., Gonzalez, C., Llorca, J. (2014). A stable X-FEM in cohesive transition from closed to open crack. International Journal for Numerical Methods in Engineering, 101(7), 540–570. http://dx.doi.org/10.1002/nme.4809.
  • Venturini, G., Wang, K., Romero, I., Ariza, M. P., Ortiz, M. (2014). Atomistic long-term simulation of heat and mass transport. Journal of the Mechanics and Physics of Solids, 73, 242–268. http://dx.doi.org/10.1016/j.jmps.2014.09.008.
  • González-Ferreiro, B., Romero, I., Ortiz, M. (2016). A numerical method for the time coarsening of transport processes at the atomistic scale. Modelling and Simulation in Materials Science and Engineering, 24(4), 045011–45026. http://dx.doi.org/10.1088/0965-0393/24/4/045011.
  • Urrecha, M., Romero, I. (2016). Un método sin malla y estabilizado para la resolución de las ecuaciones lagrangianas de los fluidos newtonianos. Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, 32, 116–124. http://dx.doi.org/doi:10.1016/j.rimni.2015.02.006.
  • Tapia-Fernández, S., Romero, I., García-Beltrán, Á. (2017). A new approach for the solution of the neighborhood problem in meshfree methods. Engineering with Computers, 33(2), 239–247. http://dx.doi.org/10.1007/s00366-016-0468-8.
  • Portillo, D., del Pozo, D., Rodríguez-Galán, D., Segurado, J., Romero, I. (2017). MUESLI - a Material UnivErSal LIbrary. Advances in Engineering Software, 105, 1–8. http://dx.doi.org/10.1016/j.advengsoft.2017.01.007.
  • Urrecha, M., Romero, I., de Felipe, J., Merchán-Pérez, Á. (2017). Influence of cerebral blood vessel movements on the position of perivascular synapses. PLOS ONE, 12(2), e0172368. http://dx.doi.org/10.1371/journal.pone.0172368.
  • Portillo, D., García Orden, J. C., Romero, I. (2017). Energy-Entropy-Momentum integration schemes for general discrete non-smooth dissipative problems in thermomechanics. International Journal for Numerical Methods in Engineering, 112(7), 776–802. http://dx.doi.org/10.1002/nme.5532.
  • del Pozo, D., Romero, I. (2017). Formulation and numerical solution of non-smooth elasto-visco-plasticity models. Computer Methods in Applied Mechanics and Engineering, 324, 457–475. http://dx.doi.org/10.1016/j.cma.2017.06.013.
  • Romero, I. (2017). A generalization of Castigliano’s theorems for structures with eigenstrains. Archive of Applied Mechanics, 24(4), 1727–1737. http://dx.doi.org/10.1007/s00419-017-1282-5.
  • Kern, D., Romero, I., Martín, S. C., García-Orden, J. C. (2018). Performance Assessment of Variational Integrators for Thermomechanical Problems. Journal of Theoretical and Applied Mechanics, 48(2), 3–23. http://dx.doi.org/10.2478/jtam-2018-0008.
  • Romero, I. (2018). Coupling nonlinear beams and continua: Variational principles and finite element approximations. International Journal for Numerical Methods in Engineering, 114, 1192–1212. http://dx.doi.org/10.1002/nme.5782.
  • del Pozo, D., López-Gómez, I., Romero, I. (2019). A robust asymmetrical contact algorithm for explicit solid dynamics. Computational Mechanics, 64, 15–32. http://dx.doi.org/10.1007/s00466-018-1654-x.
  • Menga, E., Sánchez, M. J., Romero, I., Hernández, S. (2019). A sample-based approach to estimate the dynamic loads of components with nonlinear uncertain interfaces. Aerospace Science and Technology, 87, 369–378. http://dx.doi.org/10.1016/j.ast.2019.02.012.
  • Li, J., Romero, I., Segurado, J. (2019). Development of a thermo-mechanically coupled crystal plasticity modeling framework: Application to polycrystalline homogenization. International Journal of Plasticity, 119, 313–330. http://dx.doi.org/10.1016/j.ijplas.2019.04.008.
  • Menga, E., Sánchez, M. J., Romero, I. (2019). Anisotropic meta-models for computationally expensive simulations in nonlinear mechanics. International Journal for Numerical Methods in Engineering, 121(5), 904–924. http://dx.doi.org/10.1002/nme.6250.
  • Gebhardt, C. G., Romero, I., Rolfes, R. (2020). A new conservative/dissipative time integration scheme for nonlinear mechanical systems. Computational Mechanics, 65, 405–427. http://dx.doi.org/10.1007/s00466-019-01775-3.
  • Portillo, D., Oesterle, B., Thierer, R., Bischoff, M., Romero, I. (2020). Structural models based on 3D constitutive laws: Variational structure and numerical solution. Computer Methods in Applied Mechanics and Engineering, 362, 112872. http://dx.doi.org/10.1016/j.cma.2020.112872.
  • Romero, I., Gebhardt, C. G. (2020). Variational principles for nonlinear Kirchhoff rods. Acta Mechanica, 231, 625–647. http://dx.doi.org/10.1007/s00707-019-02562-0.
  • Gebhardt, C. G., Romero, I. (2020). The rotating rigid body model based on a non-twisting frame. Journal Nonlinear Science, 99(2), 137–35. http://dx.doi.org/10.1007/s00332-020-09648-3.
  • de Pablos, J. L., Menga, E., Romero, I. (2020). A Methodology for the Statistical Calibration of Complex Constitutive Material Models: Application to Temperature-Dependent Elasto-Visco-Plastic Materials. Materials, 13(19), 4402. http://dx.doi.org/10.3390/ma13194402.
  • Cantón-Sánchez, R., Romero, I. (2021). Dimensionally reduced nonlinear solids with general loads and constitutive laws: Theory and finite element formulation for rod-like bodies. International Journal of Solids and Structures, 210-211, 273–288. http://dx.doi.org/10.1016/j.ijsolstr.2020.11.024.
  • Schiebl, M., Romero, I. (2021). Energy-momentum conserving integration schemes for molecular dynamics. Computational Mechanics, 67, 915–935. http://dx.doi.org/10.1007/s00466-020-01971-6.
  • Tapia-Fernández, S., Alonso-Miyazaki, P. H., Romero, I., García-Beltrán, Á. (2021). Strategy and algorithms for the parallel solution of the nearest neighborhood problem in shared-memory processors. Engineering with Computers. http://dx.doi.org/10.1007/s00366-021-01304-y.
  • Gebhardt, C. G., Romero, I. (2021). On a nonlinear rod exhibiting only axial and bending deformations: mathematical modeling and numerical implementation. Acta Mechanica, 232, 3285-3847. http://dx.doi.org/10.1007/s00707-021-03038-w.
  • Romero, I., Andrés, E. M., Ortiz-Toranzo, Á. (2021). Variational updates for general thermo–chemo–mechanical processes of inelastic solids. Computer Methods in Applied Mechanics and Engineering, 385, 114013. http://dx.doi.org/10.1016/j.cma.2021.114013.
  • Ruiz, D., Portillo, D., Romero, I. (2021). A data-driven method for dissipative thermomechanics. IFAC-PapersOnLine, 54(19), 315–320. http://dx.doi.org/10.1016/j.ifacol.2021.11.096.
  • Elahi, S., Tavakoli, R., Boukellal, A., Isensee, T., Romero, I., Tourret, D. (2022). Multiscale simulation of powder-bed fusion processing of metallic alloys. Computational Materials Science, 209, 111383. http://dx.doi.org/10.1016/j.commatsci.2022.111383.
  • Elahi, S., Tavakoli, R., Romero, I., Tourret, D. (2023). Grain growth competition during melt pool solidification — Comparing phase-field and cellular automaton models. Computational Materials Science, 216, 111882. http://dx.doi.org/10.1016/j.commatsci.2022.111882.
  • Romero, I., Ortiz, M. (2023). Extended molecular dynamics: Seamless temporal coarse-graining and transition between deterministic and probabilistic paradigms. European Journal of Mechanics - A/Solids, 97, 104858. http://dx.doi.org/10.1016/j.euromechsol.2022.104858.
  • Schenk, C., Portillo, D., Romero, I. (2023). Linking discrete and continuum diffusion models: Well-posedness and stable finite element discretizations. International Journal for Numerical Methods in Engineering, 124(9), 2105-2121. http://dx.doi.org/10.1002/nme.7204.
  • de Pablos, J., Sabirov, I., Romero, I. (2023). A methodology for the calibration of complex material models: application to thermo-elasto-plastic materials for high-velocity impact simulations. Archives of Computational Methods in Engineering, 30, 2859-2888. http://dx.doi.org/10.1007/s11831-023-09888-y.
  • Cantón-Sánchez, R., Portillo, D., Romero, I. (2023). Dimensionally reduced, nonlinear dragged solids: Theory and finite elements for rigid and shell-like bodies. European Journal of Mechanics - A/Solids, 100, 104980. http://dx.doi.org/10.1016/j.euromechsol.2023.104980.
  • Romero, I., Schenk, C. (2023). Connecting beams and continua: variational basis and mathematical analysis. Meccanica, 58, 1973-1982. http://dx.doi.org/10.1007/s11012-023-01702-0.
  • Vasudevan, A., Rodríguez-Martínez, J., Romero, I. (2023). Analysis and design of bistable and thermally reversible metamaterials inspired by shape-memory alloys. International Journal of Solids and Structures, 275(112278). http://dx.doi.org/10.1016/j.ijsolstr.2023.112278.
  • Rossi, N., Romero, I., Huespe, A. (2024). On the limit behavior of lattice-type metamaterials with bi-stable mechanisms. International Journal of Mechanical Sciences, 276, 109375. http://dx.doi.org/10.1016/j.ijmecsci.2024.109375.
  • Schenk, C., Vasudevan, A., Haranczyk, M., Romero, I. (2024). Model-Based Reinforcement Learning Control of Reaction-Diffusion Problems. Optimal Control Applications and Methods, 45, 2897-2914. http://dx.doi.org/10.1002/oca.3196.
  • Andrés, E. M., Romero, I. (2024). A variational method for the simulation of hydrogen diffusion in metals. Mechanics of Materials, 105166. http://dx.doi.org/10.1016/j.mechmat.2024.105166.
  • Ortiz-Toranzo, Á., Romero, I. (2024). Finite Element Discretization of the Thermo-Diffusive-Mechanical Problem with Large Deformations. Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, 40(4). http://dx.doi.org/10.23967/j.rimni.2024.10.56364.
  • Pandolfi, A., Romero, I., Ortiz, M. (2025). An optimal-transport finite-particle method for driven mass diffusion. Computer Methods in Applied Mechanics and Engineering, 442, 118013. http://dx.doi.org/10.1016/j.cma.2025.118013.
  • Romero, I., Ortiz, M. (2025). An energy-stepping Markov Monte Carlo method. Meccanica, 60, 1411–1436. http://dx.doi.org/10.1007/s11012-025-01997-1.
  • Cantón-Sánchez, R., Romero, I. (2025). Fluid-structure interaction between dimensionally-reduced nonlinear dragged solids and incompressible flows. Computer Methods in Applied Mechanics and Engineering, 446, 118211. http://dx.doi.org/10.1016/j.cma.2025.118211.
  • Bell-Navas, E., Portillo, D., Romero, I. (2025). A fully variational numerical method for structural topology optimization based on a Cahn-Hilliard model. Computer Methods in Applied Mechanics and Engineering, 445, 118233. http://dx.doi.org/10.1016/j.cma.2025.118233.
  • Castillón, M., Romero, I., Segurado, J. (2026). A phase-field approach to fracture and fatigue analysis: bridging theory and simulation. International Journal of Fatigue, 205, 109397. http://dx.doi.org/10.1016/j.ijfatigue.2025.109397.
  • Portillo, D., Romero, I. (2026). Embedding structures in continua: linear models and finite element discretizations. Computer Methods in Applied Mechanics and Engineering, 451, 118683. http://dx.doi.org/10.1016/j.cma.2025.118683.
  • Romero, I., Ortiz, M. (2026). A note on data-driven methods for mechanical problems with non-unique solutions. Meccanica, 61(1). http://dx.doi.org/10.1007/s11012-026-02087-6.